2008雷诺考特产品定位在3大城市耳鼻喉科打算选择多少名高潜力的医生？（）
A.200
B.210
C.220
D.230
参考答案：B
---- Who is it that is making so much noise upstairs?
---- ______ the students preparing for the New Year’s Party.
A．There are
B．They are
C．It is
D．That is
心脏听诊肺动脉区P2固定分裂、亢进，提示
A．房间隔缺损
B．室间隔缺损
C．动脉导管未闭
D．法洛四联症
E．肺动脉狭窄
